I used an article from Wargames Illustrated, March 2005 (Number 210) to guide the level of experience for each of the brigades and batteries.

The final result became the order of battle I used. You can find a Google Sheet with ready-to-use labels here. A sample from the OOB is off to the left: These are the labels for the British First Infantry Division under Sherbrooke. It consists of three Units of Infantry, a Commander, and a battery of six-pound foot artillery.